SC No. Type Error Name/Error Condition/Major Cause/Solution
After starting continuous job with paper width of 257 mm or more, does
not reach 0 degrees C after 100 sec.
• Outside input voltage guarantee
• Thermistor dirt
• Thermistor modification/float
• After excessive temperature rise prevention unit operation
• Fusing lamp disconnection
• Harness disconnection between the fusing unit and the BCU or the
PSU (AC controller board)
• Thermopile defective
• BCU defective
• AC controller board defective
1. Check the power supply voltage and reconnect the cable to the
outlet.
2. Clean or replace the thermistor.
3. Replace the fusing sleeve thermostat.
4. Replace the fusing sleeve belt unit.
5. Replace the harness between the fusing unit and the BCU or the PSU
(AC controller board).
6. Replace the thermopile (edge).
7. Replace the BCU.
8. Replace the PSU (AC controller board).
6. Troubleshooting
850
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